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Why is the enthalpy considered more usef...

Why is the enthalpy considered more useful than internal energy in chemical reactions ?

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ICSE-CHEMICAL THERMODYNAMICS -REVIEW EXERCISES
  1. Explain first law of thermodynamics. What'is its physical significance...

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  2. Define internal energy and enthalpy of a system.

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  3. Why is the enthalpy considered more useful than internal energy in che...

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  4. Derive the following equation : Delta H = DeltaU + (Deltan) RT

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  5. One mole of an ideal gas is expanded from a volume of 3L to 5L under a...

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  6. During a process, a system absorbs 710 kJ of heat and does 250 J of wo...

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  7. Two moles of an ideal gas at 2 atm and 25^@C are compressed isothermal...

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  8. A system has internal energy U1. If 500 J of heat is supplied to it an...

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  9. Heat of combustion of CH4(g) at constant volume and at 298 K has been ...

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  10. When 2 g of benzene are burnt in a bomb calorimeter, the heat produced...

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  11. The enthalpy change (DeltaH) of the reaction at 298 K C2H5OH(l) + 3O...

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  12. 400 cm^3 of a gas are compressed to half of its volume by applying a p...

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  13. Calculate the work done (w) and internal energy change (DeltaU), when ...

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  14. Calculate the work done in calories when 5 moles of an ideal gas are c...

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  15. In a reaction 2.5KJ of heat is released from the system and 5.5 KJ of ...

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  16. Define specific heat capacity and molar heat capacity of a substance.

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  17. Prove that Cp - Cv = R.

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  18. What do you understand by Cp and Cv ?

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  19. Establish a relationship between Cv and Cp?

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  20. Define the term 'entropy'. How does TDeltaS determine the spontaneity ...

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